DFX Intelligence

Data Factory

RIA / WealthAdvisor44 years in industry

LYNN RAYMOND SIEWERT

Advisor at CETERA INVESTMENT ADVISERS LLC

RIDGEFIELD, WA

This is the graph view. The full profile, with its team, deals and sources, is on RIA / Wealth Management.Open the full profile →

Search this name across graphsid dfx:ria:fbad8868-66ba-763b-edf5-6cf270df4e0c

Data as of Sep 14, 2026 (this record's last observation) from federal regulator filings. Page built Sep 21, 2026, 5:46 AM UTC and rebuilt at most every 15 minutes.

Relationships: 7
Dated events: 1
On other graphs: 0
Observed: Apr 9, 1999 to Sep 14, 2026

Across DFX

This entity has not been resolved onto another DFX graph by a shared identifier. A name match elsewhere would be a candidate, never an identity, and none is recorded.

Facts

fact = as filed or announced; derived = computed by DFX; estimate = a band, never a point

Current firm: CETERA INVESTMENT ADVISERS LLC
Current firm class: broker-dealer affiliated wealth managerderived
Book size: not publicno per-advisor AUM is published by the SEC, FINRA or IAPD, and DFX estimates none
Industry start: Aug 13, 1982earliest registration or exam on IAPD
Years in industry: 44derivedfrom the industry start date
Years at current firm: 1derivedfrom the current registration's begin date
Prior firms: 6
Current registrations: 1
Registered states: 1
Exams: S65|S63
First exam: Aug 13, 1982
First registration: Apr 9, 1999
Dual registered: no
Other names: LYNN RAYMOND SIEWERT|Lynn R Siewert|Lynn Siewert
IAPD individual key: 1057367

Registration history

registration spans on IAPD; the basis says whether the span is a current registration or a prior employment record

Firm	Class	Began	Ended	Current	Branch	Basis
CETERA INVESTMENT ADVISERS LLC	Bd affiliated wealth	Sep 5, 2025	n/a	yes	RIDGEFIELD, WA	Current employment
AVANTAX ADVISORY SERVICES	Former SEC adviser	Jul 31, 2025	Sep 5, 2025	no	Ridgefield, WA\|DALLAS, TX	Previous registration
LEGACY CORNERSTONE WEALTH LLC	Independent wealth	Feb 13, 2018	Dec 12, 2025	no	Vancouver, WA\|PEORIA, AZ	Previous registration
ADVANCED CORPORATE PLANNING, LLC	n/a	Aug 3, 2017	Apr 5, 2018	no	VANCOUVER, WA	Previous registration
FIRST ALLIED ADVISORY SERVICES, INC.	Former SEC adviser	Jul 2, 2012	Jul 5, 2017	no	VANCOUVER, WA\|Vancouver, WA\|VANCOUVER, WA	Previous registration
FIRST ALLIED SECURITIES, INC.	Former SEC adviser	Dec 1, 2006	Jul 2, 2012	no	VANCOUVER, WA\|Vancouver, WA	Previous registration
RAYMOND JAMES FINANCIAL SERVICES, INC.	n/a	Apr 9, 1999	Jun 4, 2003	no	VANCOUVER, WA	Previous registration

Moves

a move is two registration dates; a bulk corporate re-registration is typed BULK_TRANSFER and is not a move

From	To	Left	Joined	Gap, days	Kind	Move type
LEGACY CORNERSTONE WEALTH LLC	AVANTAX ADVISORY SERVICES	Dec 12, 2025	Jul 31, 2025	-134	Firm change after gap	RIA to ibd
AVANTAX ADVISORY SERVICES	CETERA INVESTMENT ADVISERS LLC	Sep 5, 2025	Sep 5, 2025	0	Bulk transfer	Ibd to ibd
ADVANCED CORPORATE PLANNING, LLC	LEGACY CORNERSTONE WEALTH LLC	Apr 5, 2018	Feb 13, 2018	-51	Firm change after gap	Other
FIRST ALLIED ADVISORY SERVICES, INC.	ADVANCED CORPORATE PLANNING, LLC	Jul 5, 2017	Aug 3, 2017	29	Firm change	Other
FIRST ALLIED SECURITIES, INC.	FIRST ALLIED ADVISORY SERVICES, INC.	Jul 2, 2012	Jul 2, 2012	0	Bulk transfer	Other
RAYMOND JAMES FINANCIAL SERVICES, INC.	FIRST ALLIED SECURITIES, INC.	Jun 4, 2003	Dec 1, 2006	1,276	Firm change after gap	Other

Team moves

moves this advisor made together with colleagues (two or more registrations ending and beginning together)

Team	Left	Joined	From	Kind
281027:104556:AZ:2025-12-12	Dec 12, 2025	Jul 31, 2025	PEORIA, AZ	Firm change after gap

Relationships

Registered with (7)

→ CETERA INVESTMENT ADVISERS LLCRegistered adviserregistration: current employment
Sep 5, 2025 to presentfactForm ADV
→ LEGACY CORNERSTONE WEALTH LLCRegistered adviserregistration: previous registration
Feb 13, 2018 to Dec 12, 2025factForm ADV
→ AVANTAX ADVISORY SERVICESRegistered adviserregistration: previous registration
Jul 31, 2025 to Sep 5, 2025factForm ADV
→ ADVANCED CORPORATE PLANNING, LLCRegistered adviserregistration: previous registration
Aug 3, 2017 to Apr 5, 2018factForm ADV
→ FIRST ALLIED ADVISORY SERVICES, INC.Registered adviserregistration: previous registration
Jul 2, 2012 to Jul 5, 2017factForm ADV
→ FIRST ALLIED SECURITIES, INC.Registered adviserregistration: previous registration
Dec 1, 2006 to Jul 2, 2012factForm ADV
→ RAYMOND JAMES FINANCIAL SERVICES, INC.Registered adviserregistration: previous registration
Apr 9, 1999 to Jun 4, 2003factForm ADV

Dated events

Occurred
Dec 12, 2025
Advisor changed firm
Lynn Raymond Siewert left Legacy Cornerstone Wealth Llc for Avantax Advisory Services (registered 2025-07-31)
Form ADVobserved 6 days ago